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  1. {"ast":null,"code":"'use strict'; // 19.1.3.6 Object.prototype.toString()\n\nvar classof = require('./_classof');\n\nvar test = {};\ntest[require('./_wks')('toStringTag')] = 'z';\n\nif (test + '' != '[object z]') {\n require('./_redefine')(Object.prototype, 'toString', function toString() {\n return '[object ' + classof(this) + ']';\n }, true);\n}","map":null,"metadata":{},"sourceType":"script"}